| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 2 | |
| #2 | Sweden | 2 | |
| #3 | Australia | 1 | |
| #4 | Canada | 1 | |
| #5 | Germany | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Israel | 1 | |
| #8 | Italy | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Metalworking with concentrated electric current |
| # | Name | Total Patents |
|---|---|---|
| #1 | Andrews James Dair | 4 |
| #2 | Andrews J D | 2 |
| #3 | Andrews James D | 2 |
| #4 | Tyler R K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4376020A | Method of and apparatus for cutting narrow grooves |